Computer Technology and Computer Programming

In spring and summer, honeybees gather nectar to make into honey. These fascinating insects live and work together in complicated societies, complete with queen bees and workers. Read and find out abo

Coral reefs are living things made up of tiny coral polyps and are unique, delicately balanced ecosystems that provide homes to hundreds of species of plants and animals, but environmental threats hav

Let's-Read-and-Find-Out about Endangered Animals Have you seen a northern hairy-nosed wombat or an eastern barred bandicoot? These animals are so rare, they might disappear forever, and they're not al

Dolphins are smart. They are so smart that they can talk to each other. Dolphins communicate underwater for the same reason people talk on land: to let others know who they are, where they are, and ma

Find out all about the many kinds of webs spiders spin in this level 2 Let's Read and Find Out. How do spiders spin such large webs? Spiders produce a unique silk that can stretch from wall to wall,

Did you know that energy comes from the food you eat? From the sun and wind? From fuel and heat?You get energy every time you eat. You transfer energy to other things every time you play baseball. In

What happens to food after you eat it? In this newly illustrated book, complete with photos, Paul Showers and Edward Miller take you on a journey through the human digestive system into the mouth, dow

What do a fawn and a hermit crab have in common? They both use camouflage to hide from their enemies. A fawn’s spots help it blend in with its dappled surroundings, and a hermit crab might be mistaken

Bats fly into the spotlight in this exploration of such basics as where the live, how mothers raise their pups, and how they hunt for food. Included as well is a simple plan for a building a backyard

Why should you be a friend to trees? Trees are a valuable natural resource. People depend on trees for food, and animals depend on trees for food and shelter. But most important, we depend on trees be

"New illustrations and some text revision update this 1965 basic introduction to the skin and its functions. Four children take turns presenting different aspects of the skin, such as pigment and mel

SnakesSlithering, scaly, and sly -- snakes are fascinating reptiles. They are also hunters. Find out how snakes survive in the wild, and how they capture their prey.

Let's-read-and-find-out about Your HeartNight and day, whether you're asleep or awake, your heart is always beating. Read and find out how your heart works and how to keep it healthy.

Stegosaurus had spikes along its back. Triceratops had long, sharp horns. Tyrannosaurus rex was enormous. Millions and millions of years before the first people lived, these fascinating creatures rule

Our world is getting warmer, and the polar ice caps are melting. A polar bear needs the ice to survive, but many scientists believe that climate change may make it impossible for polar bears to live i

Coral reefs are living things made up of tiny coral polyps and are unique, delicately balanced ecosystems that provide homes to hundreds of species of plants and animals, but environmental threats hav

Look around to see what uses oil—cars, airplanes, boats, factories, and countless other machines. The world is dependent on oil as its main source of energy. Although oil is plentiful right now, the s

People have taken dangerous risks trying to fly. Some inventors built wings for their arms and flapped them like birds. Some built balloons. Some built machines that glided with the wind. It wasn't ea

For hundreds of years people have wanted to fly. Countless tried and failed, but now flying is very common. Read and find out about the many obstacles that have been overcome so planes and people can

The earth is getting hotter, and not just in the summer. The climate of your own hometown is changing. But why is this happening, and can we stop it? Read and find out!

Scientists consider alligators a "keystone species"—the most important animal in their habitat. Without the alligator, many animals dependent on the gator would become extinct. Read and find ou

Thousands of animal species have vanished in the last two centuries, and many others, like the Amur leopard, are almost gone.Read and find out about the world's most fascinating endangered animals ...

There are forces at work whenever you throw a ball, run up the stairs, or push your big brotheroff the couch. Want to learn more about the forces around you? Read and find out!

Read and find out all about eggs -- and how baby chicks grow inside of them. Learn how chicks develop,how they get the food they need to grow, and how a mother hen helps keep them safe in this simple

You've seen your own blood, when you have a cut or a scrape. You can see the veins in your wrist, and you've seen the scab that forms as a cut heals. But do you know what blood does for you? Without blood, you couldn't play, or grow, or learn. That's because just about every part of your body needs blood, from your muscles to your bones to your brain. How does your body use blood? Read and find out! Ages 10 – 14

Deep underground and on the surface, worms are hard at work! Worms work like little plows, burrowing through soil by swallowing it. As they make their way through the dirt, worms loosen the soil so ro

Crawling through the dirt, worms are hard at work, helping plants to grow. Worms help the fruit and vegetables we eat by loosening the soil and feeding the plants. Read and find out about these wiggli

Let's-read-and-find-out aboutMarsSomeday people from Earth may live on Mars.In this century, we will go to the planet to learn more about it. It will become our outpost in space -- our space colony.

The sun brings heat, warmth, and energy to the Earth. What is the sun made of? How big is it? How far away? Read and find out!

FrogsFrogs can jump thirty times their own body length, catch insects on the wing, and breathe underwater or on land. But they must always keep their skins wet. Read and find out why!

Imagine that you're walking on the moon. What is it like? For thousands of years people looked up at the moon and wondered about it. Now we know what the moon is like. There is no air on the moon and nothing grows, but there are towering mountains and deep craters--and much more! Colder than the desert, the hotter than the desert, the moon is an amazing place to explore.

Chirp! Chirp! Chirp! That's the sound crickets make. You've probably heard them chirp on a summer evening. But did you know that they make their chirping sounds by rubbing their wings together, and

Have you ever dreamed of being an astronaut? Wondered what it might be like to see the sun set sixteen times in one day?Open this book and be transported on an information-packed voyage aboard the sp

Moonlight is really sunlight!Did you know that the moon doesn't make its own light? Instead, it receives light from the sun and reflects it to us on the Earth. Read and find out about how the sun, the stars and light bulbs make light so we can see.Did you know that moonlight is really sunlight? The moon can't make its own light, so it receives light from the sun and then sends it to us here on the Earth.Any child who's ever wondered about the fascinating properties of light will want to read this classic science title. Readers will even learn how fast light can travel: from the moon to the Earth in less than three seconds! Veteran science author Franklyn M. Branley's lively text and Stacey Schuett's new illustrations combine fun facts and hands-on activities in this accessible introduction to the science of light. Did you know that moonlight is really sunlight? The moon can't make its own light, so it receives light from the sun and then sends it to us here on the Earth.Any child who's

After rain comes down, the sun comes out and dries the puddles. But the water isn't gone. The heat from the sun has turned it into water vapor-it has evaporated. Eventually, this moisture in the air c

The earth is like a spaceship in orbit—it has everything on board that we need to survive: water, food, and air with oxygen. Unlike a space shuttle, Earth is able to renew its resources. Read and find

Many birds travel thousands of miles each year, migrating between summer and winter homes. Just how they find their way back and forth, sometimes returning to the exact same nesting grounds each year,

Did you know that an oil spill occurs somewhere in the world almost every day of the year? Berger and Mirocha focus on one of the worst spills in history—the 1989 Exxon Valdez oil tanker spill&#

Water is always flowing, from a brook to a stream, to a river to the ocean. Read and find out more about how water shapes the earth and why it is important to keep our water clean.

Aliki takes readers on a guided tour that begins with grazing cows, proceeds through milking and a trip to the dairy, and ends with some different foods made from milk. This revised edition of Aliki's